Detection of genes involved in biofilm formation in Staphylococcus aureus isolates

is one of the Gram-positive pathogens causing a wide range of nosocomial infections. The present study investigates genotypic and phenotypic aspects involved in biofilm formation in methicillin-resistant strains isolated from nosocomial infections in Isfahan. A total of 110 strains were collected...

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Main Authors: Nourbakhsh, Fahimeh, Namvar, Amirmorteza Ebrahimzadeh
Format: Article
Language:deu
Published: German Medical Science GMS Publishing House 2016-03-01
Series:GMS Hygiene and Infection Control
Subjects:
Online Access:http://www.egms.de/static/en/journals/dgkh/2016-11/dgkh000267.shtml
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author Nourbakhsh, Fahimeh
Namvar, Amirmorteza Ebrahimzadeh
author_facet Nourbakhsh, Fahimeh
Namvar, Amirmorteza Ebrahimzadeh
author_sort Nourbakhsh, Fahimeh
collection DOAJ
description is one of the Gram-positive pathogens causing a wide range of nosocomial infections. The present study investigates genotypic and phenotypic aspects involved in biofilm formation in methicillin-resistant strains isolated from nosocomial infections in Isfahan. A total of 110 strains were collected from three major hospitals in Isfahan, the center of Iran. The antibiotic resistance pattern, phenotypes, and biofilm formation genes were studied using Congo red agar (CRA) and multiplex PCR (M-PCR). We found that 103 out of 110 samples (93.6%) were MRSA. The highest frequency of resistance was found to penicillin (89%), ciprofloxacin (87.4%), and erythromycin (86.1%). Phenotypic results showed that 53.5% were high biofilm producers, while 33.3% and 13.2% were intermediate and low biofilm producers, respectively. (69.3%) had the highest frequency in comparison to other intercellular adhesion () genes, (54.8%) was second most common.The results show that the adherence or attachment ability and biofilm production are important for enhancing virulence factors among isolates of strains.
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spelling doaj.art-720ae0742d4d4b429dc8464a7431fb462022-12-21T17:49:59ZdeuGerman Medical Science GMS Publishing HouseGMS Hygiene and Infection Control2196-52262016-03-0111Doc0710.3205/dgkh000267Detection of genes involved in biofilm formation in Staphylococcus aureus isolatesNourbakhsh, Fahimeh0Namvar, Amirmorteza Ebrahimzadeh1Department of Microbiology, Islamic Azad University, Shahrekord branch, Shahrekord, IranDepartment of Microbiology, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iranis one of the Gram-positive pathogens causing a wide range of nosocomial infections. The present study investigates genotypic and phenotypic aspects involved in biofilm formation in methicillin-resistant strains isolated from nosocomial infections in Isfahan. A total of 110 strains were collected from three major hospitals in Isfahan, the center of Iran. The antibiotic resistance pattern, phenotypes, and biofilm formation genes were studied using Congo red agar (CRA) and multiplex PCR (M-PCR). We found that 103 out of 110 samples (93.6%) were MRSA. The highest frequency of resistance was found to penicillin (89%), ciprofloxacin (87.4%), and erythromycin (86.1%). Phenotypic results showed that 53.5% were high biofilm producers, while 33.3% and 13.2% were intermediate and low biofilm producers, respectively. (69.3%) had the highest frequency in comparison to other intercellular adhesion () genes, (54.8%) was second most common.The results show that the adherence or attachment ability and biofilm production are important for enhancing virulence factors among isolates of strains.http://www.egms.de/static/en/journals/dgkh/2016-11/dgkh000267.shtmlStaphylococcus aureusMRSAbiofilmica geneantibiotic resistance
spellingShingle Nourbakhsh, Fahimeh
Namvar, Amirmorteza Ebrahimzadeh
Detection of genes involved in biofilm formation in Staphylococcus aureus isolates
GMS Hygiene and Infection Control
Staphylococcus aureus
MRSA
biofilm
ica gene
antibiotic resistance
title Detection of genes involved in biofilm formation in Staphylococcus aureus isolates
title_full Detection of genes involved in biofilm formation in Staphylococcus aureus isolates
title_fullStr Detection of genes involved in biofilm formation in Staphylococcus aureus isolates
title_full_unstemmed Detection of genes involved in biofilm formation in Staphylococcus aureus isolates
title_short Detection of genes involved in biofilm formation in Staphylococcus aureus isolates
title_sort detection of genes involved in biofilm formation in staphylococcus aureus isolates
topic Staphylococcus aureus
MRSA
biofilm
ica gene
antibiotic resistance
url http://www.egms.de/static/en/journals/dgkh/2016-11/dgkh000267.shtml
work_keys_str_mv AT nourbakhshfahimeh detectionofgenesinvolvedinbiofilmformationinstaphylococcusaureusisolates
AT namvaramirmortezaebrahimzadeh detectionofgenesinvolvedinbiofilmformationinstaphylococcusaureusisolates